Budget Billing_|_Keep Full Program_|_Tank Sizes_|_P.E.R.C Savings Calculator Propane tanks come in a variety of sizes, and range from 100 - 1,000 gallon tanks. Our experienced service technicians can help you choose the size that is right for you and your usage needs. Below are some of the tank capacities that we lease at an affordable rate: 100 gallon tank 120 gallon tank 124 gallon tank 200 gallon tank 250 gallon tank 325 gallon tank 330 gallon tank 500 gallon tank 1000 gallon tank We assume all maintenance and upkeep of leased tanks and regulators. Choosing a tank size is dependent as to how much propane you expect to use. To get an approximate idea of what size tank you may need, add up the total BTU's of appliances that will be using propane and divide by 91,500. This will give you a fairly accurate idea of how many gallons of propane will be used in an hour. If you are a commercial company, and the total load is 1,000,000 BTU, the system will use about 11 gallons of propane an hour. It is important to know that this figure represents the BTU load capacity (100%) so if all appliances are sued 10 hours per day at full capacity, the propane consumption will be around 110 gallons per day. Usage such as this would probably require around 2,000 gallons or more in storage.